Issue with People Picker

Hello,

We are using People Picker control in SharePoint 2010 application. If user types junk data and clicks on "Check Names" icon, it takes lot of time (which is ok) and then shows a validation message saying No exact match found. Now the issue here is that this message is hidden behind textbox below People Picker. One way to solve this is to leave some vertical space between People Picker and next textbox; but it doesn't look good with overall page. Is there any way to control this validation message? May be some way to change this message?

Thanks.